<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>

</body>
<script>
  const arr = [911, 52, 88, 666, 555, 2323]

  arr.sort(function (x, y) {
    return y - x
  })
  console.log(arr)
</script>

</html>